Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Baoshan Xing](https://cdn.adscientificindex.com/pictures/ab/1298015.jpg)
Environmental & soil chemistry
adsorption
nanoparticles
microplastics
food safety
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
874
770
0.881
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Bruce E Rittmann](https://cdn.adscientificindex.com/pictures/b1/4995465.jpg)
Environmental Biotechnology
Environmental Engineering
Biogeochemistry
Resource Recovery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
627
410
0.654
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Menachem Elimelech](https://cdn.adscientificindex.com/pictures/2d/834856.jpg)
environmental engineering
membrane separations
environmental nanotechnology
desalination
water
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
554
503
0.908
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Bruce E Logan](https://cdn.adscientificindex.com/pictures/c4/884385.jpg)
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
545
452
0.829
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Charles T Driscoll](https://cdn.adscientificindex.com/pictures/8a/4661062.jpg)
environmental engineering
environmental science
biogeochemistry
air pollution effects
human disturbance of ecosystems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
512
267
0.521
* Total i10 IndexRankings
Ranking Based On Selection: 6
![John C Wingfield](/user/assets/images/profile/no-profile-photo.png)
Environmental endocrinology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
508
297
0.585
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Robert B Jackson](https://cdn.adscientificindex.com/pictures/e8/1649643.jpg)
biogeochemistry
ecology
environmental science
climate change
ecohydrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
492
402
0.817
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Regina Santella](https://cdn.adscientificindex.com/pictures/b2/911265.jpg)
cancer biomarkers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
463
189
0.408
* Total i10 IndexRankings
Ranking Based On Selection: 9
![John G Watson](/user/assets/images/profile/no-profile-photo.png)
Environmental Science
Air Pollution
Aerosol
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
461
264
0.573
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Michael R Hoffmann](https://cdn.adscientificindex.com/pictures/7b/832658.jpg)
environmental chemistry
atmospheric chemistry
environmental engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
431
287
0.666
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Virender Sharma](https://cdn.adscientificindex.com/pictures/95/1673877.jpg)
Water Treatment
Environmental Science
Environmental Chemistry
Environmental Health
Environmental
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
426
313
0.735
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Bin Gao](https://cdn.adscientificindex.com/pictures/8d/1611087.jpg)
Environmental Science & Engineering
Contaminant Hydrology
Environmental Nanotechnology
Biochar
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
404
389
0.963
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Paul Westerhoff](https://cdn.adscientificindex.com/pictures/26/788628.jpg)
water treatment
environmental nanotechnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
397
339
0.854
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Pedro Jj Alvarez](https://cdn.adscientificindex.com/pictures/62/1509309.jpg)
environmental engineering
environmental nanotechnology
water treatment
biodegradation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
394
300
0.761
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Jorge Gardea Torresdey](https://cdn.adscientificindex.com/pictures/64/1677764.jpg)
Environmental Nanotechnology
Environmental Science & Engineering
Nanotoxicology
Environmental Chemistry
Phytoremediation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
392
278
0.709
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Christopher B Field](https://cdn.adscientificindex.com/pictures/98/1649627.jpg)
climate change
ecology
carbon cycle
leaf nitrogen
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
383
271
0.708
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Zhanqing Li](https://cdn.adscientificindex.com/pictures/49/1296451.jpg)
Climate Change and Environment
Remote Sensing
Atmospheric Physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
381
272
0.714
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Scott Doney](https://cdn.adscientificindex.com/pictures/fa/1682919.jpg)
Oceanography
Biogeochemistry
Marine Ecosystems
Climate
Carbon Cycle
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
378
280
0.741
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Sanjay Rajagopalan](https://cdn.adscientificindex.com/pictures/5f/886258.jpg)
Environment
Pollution
Cardiometabolic
Planetary Health
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
370
284
0.768
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Jay Gan](https://cdn.adscientificindex.com/pictures/65/1770567.jpg)
Environmental Science
Chemistry
Soil Science
Water Quality
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
326
191
0.586
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Paul Mayewski](https://cdn.adscientificindex.com/pictures/ad/1291952.jpg)
Glaciology
climate change
atmospheric chemistry
Antarctica
Himalayas
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
323
182
0.563
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Lawrence Palinkas](https://cdn.adscientificindex.com/pictures/a9/1623560.jpg)
implementation science
mental health services research
climate change and mental health
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
224
0.707
* Total i10 IndexRankings
Ranking Based On Selection: 23
![David A Stahl](https://cdn.adscientificindex.com/pictures/9d/1684428.jpg)
Microbiology
Ecology
Evolution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
313
201
0.642
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Michael Jerrett](https://cdn.adscientificindex.com/pictures/ba/1750536.jpg)
air pollution
exposure
built environment
health effects
GIS
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
303
265
0.875
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Andrew Ghio](/user/assets/images/profile/no-profile-photo.png)
Lung diseases
iron homeostasis
fibers
particles
air pollution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
291
157
0.540
Baoshan Xing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
874
770
0.881
Environmental & soil chemistry
adsorption
nanoparticles
microplastics
food safety
Bruce E Rittmann
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
627
410
0.654
Environmental Biotechnology
Environmental Engineering
Biogeochemistry
Resource Recovery
Menachem Elimelech
Rice University
Houston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
554
503
0.908
environmental engineering
membrane separations
environmental nanotechnology
desalination
water
Bruce E Logan
Pennsylvania State University
University Park, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
545
452
0.829
Microbial fuel cells
microbial electrolysis cells
thermal batteries
desalination
water electrolyzers
Charles T Driscoll
Syracuse University
Syracuse, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
512
267
0.521
environmental engineering
environmental science
biogeochemistry
air pollution effects
human disturbance of ecosystems
John C Wingfield
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
508
297
0.585
Environmental endocrinology
Robert B Jackson
Stanford University
Stanford, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
492
402
0.817
biogeochemistry
ecology
environmental science
climate change
ecohydrology
Regina Santella
Columbia University New York
New York, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
463
189
0.408
John G Watson
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
461
264
0.573
Environmental Science
Air Pollution
Aerosol
Michael R Hoffmann
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
431
287
0.666
environmental chemistry
atmospheric chemistry
environmental engineering
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Virender Sharma
Texas A&M University
College Station, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
426
313
0.735
Water Treatment
Environmental Science
Environmental Chemistry
Environmental Health
Environmental
Bin Gao
University of Florida
Gainesville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
404
389
0.963
Environmental Science & Engineering
Contaminant Hydrology
Environmental Nanotechnology
Biochar
Paul Westerhoff
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
397
339
0.854
water treatment
environmental nanotechnology
Pedro Jj Alvarez
Rice University
Houston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
394
300
0.761
environmental engineering
environmental nanotechnology
water treatment
biodegradation
Jorge Gardea Torresdey
University of Texas El Paso
El Paso, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
392
278
0.709
Environmental Nanotechnology
Environmental Science & Engineering
Nanotoxicology
Environmental Chemistry
Phytoremediation
Christopher B Field
Stanford University
Stanford, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
383
271
0.708
climate change
ecology
carbon cycle
leaf nitrogen
Zhanqing Li
University of Maryland
College Park, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
381
272
0.714
Climate Change and Environment
Remote Sensing
Atmospheric Physics
Scott Doney
University of Virginia
Charlottesville, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
378
280
0.741
Oceanography
Biogeochemistry
Marine Ecosystems
Climate
Carbon Cycle
Sanjay Rajagopalan
Case Western Reserve University
Cleveland, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
370
284
0.768
Environment
Pollution
Cardiometabolic
Planetary Health
Jay Gan
University of California Riverside
Riverside, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
326
191
0.586
Environmental Science
Chemistry
Soil Science
Water Quality
Paul Mayewski
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
323
182
0.563
Glaciology
climate change
atmospheric chemistry
Antarctica
Himalayas
Lawrence Palinkas
University of Southern California
Los Angeles, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
224
0.707
implementation science
mental health services research
climate change and mental health
David A Stahl
University of Washington
Seattle, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
313
201
0.642
Microbiology
Ecology
Evolution
Michael Jerrett
University of California Los Angeles
Los Angeles, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
303
265
0.875
air pollution
exposure
built environment
health effects
GIS
Andrew Ghio
US Environmental Protection Agency
Washington, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
291
157
0.540
Lung diseases
iron homeostasis
fibers
particles
air pollution